This document provides an overview of CentOS Linux 6.0, including what CentOS is, its relationship to Red Hat Enterprise Linux, how to download CentOS, and basic system configuration after installation such as setting the hostname and IP address. It also briefly discusses differences between Linux and Windows and using virtualization with Linux.

1. Linux CentOS 6.0 ( ) November 4, 2011
Linux CentOS 6.0
ก ก Linux
Linux ก" Open Source *+, +-. / 01. " /23" 4 "ก 4 056 / 3" "01.*3"
Intranet/Internet Server 01. " 0 ก "* Web Server, Mail Server, Web-based email , Database Server F+
GกHIJ " "2"ก . MINIX HM, UNIX *+, , I+H+IJ "OM P / Andrew S. Tanenbaum -. ."
Kernel F+ GกHOM " Linus Trovalds P /14 V ก Trovalds W . X 4 O H P . 05.-.01. " *,4W "4 P5F 01. "
. *+,*3"05. F+ GกHW . 4" / 0 Y22G
0 Y2G F+ GกHV ก "/I ZW 5F"/ "/I Z 4 056 F+ GกH2 +FO *Z[ +V GNU GPL *+, " OM P /
Richard Stallman
Andrew S. Tanenbaum, author of the MINIX operating system
Richard Stallman Linus Torvalds, author of the Linux kernel
Richard Stallman, founder of the GNU project
*+, ": http://en.wikipedia.org/wiki/Linux
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2. Linux CentOS 6.0 ( ) November 4, 2011
0 Y22G Linux +05. F ก01. " 5F"/ 41, 4/ก ก" *+,2 F ก 40 "gMกh"01. "
. . /ก 4" I .
5F"/i ." * ก " V5F j" O. F I, * k P / F+ GกH*+W .
, 4" / 0 Y22G 1
1. RadHat Linux Enterprise F+ GกH*+,W . 4" / "ก*+, G Y22G - 4 W *3"0 1 ก" " (Commercial)
.
1.1. Fedora Linux (http://www.fedoraproject.org) IJ "P / "g/m" 2"ก RedHat (Open Source)
1.2 CentOS Linux (http://www.centos.org) IJ " "2"ก . RedHat Enterprise (Open Source)
2. SuSE Linux Enterprise (http://www.novell.com/linux/) F+ GกH*+, / 0 Vj /GP 22G
Y /p"/0 .ก" 4 G
O h* Novell
2.1 Open SuSE (http://www.opensuse.org) F+ GกH*+,IJ " "2"ก SuSE Linux (Open Source)
3. Mandriva (http://www.mandriva.com) F+,/ 1, "2"ก Mandrake 5 ." " F."/ RedHat (Open Source)
4. Slackware (http://www.slackware.com) F+ GกH*+, + 4" VOk Vก 45 M, . 01. " -" *" Command line
(Open Source)
5. Debian (http://www.debian.org) F+ GกH*+, / 01. 3"5 *3" H 4
5.1 Ubuntu (http://www.ubuntu.com) G F+ GกH +ก 45 M, *+ก3"F W .
, 4" / 0 W*/0 O +
, 2"ก ก p" m5F"/ ก G / IJ " "2"ก . Debian P /*+, G +05. F ก "4 P5F 4
1, Ubuntu Desktop VF Ubuntu Server
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3. Linux CentOS 6.0 ( ) November 4, 2011
ก ;<=>?@ ; CentOS Linux
" " j*3"ก" "4 P5F 4 4 1, F" G W .*+, 4k WH http://mirrors.kernel.org/centos/ 5 *+, 4k WH
http://www.centos.org P / Fก F ก*+, Download
4k WH http://mirrors.kernel.org/centos/ 4k WH http://www.centos.org
ก CentOS Linux
CentOS / "2"ก Community ENTerprise Operating System F+ GกH*+,IJ " "2"ก . RedHat
Enterprise Linux (RHEL) P /*+, CentOS Linux W . 3" "H P . O RedHat "*3"ก" WIF05 P /ก" IJ "/
. IJ " H V4 Open Source *+,j FO *Z[V GNU General Public License
0 Y22G CentOS Linux jก 3" "01.0 ก" *3" Web Hosting ก /" ก4." O4" , 2"ก ก" *+,
+ . V 2"ก RedHat ( Y22G . IJ "0 1 ก" .") ก" VIkก ก2/ /p"/0 " " j01.W * RPM, TAR 5 01.
.
3" , YUM 0 ก" *H V4 V P " " j " "/F + / VF "4 P5F 4 W . *+, 4k WH
www.centos.org
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4. Linux CentOS 6.0 ( ) November 4, 2011
4k WH www.centos.org
AB CDB E DF G ก <ก Linux
ก ก" F+ Gก -. " . +/ O. F W +
1. HB E B G;E = (Hostname I< ;> ;A=E DFก; Computer Name) * +ก" 1, , 4 1,
ก" 5Fก*+, . ก" 01. " "* 1
ก + . ก" 01.*3" , * " k 01. " 0 ก 05. intranet
ก + . ก" 01.*3" , ก" 4k WH 05. www
ก +*3" , ก" H 4 05. ns1, ns2
ก + , ก" Fกk mail, webmail
ก +*3" I k กH+05. proxy
ก +*3" , ก" g / +/ .05. e-learning
2. F@ E DF K IP Address
3"5 "/F +/ O W I+V ก + Pr ก" 0 PFก * k -. " . +1G O IP Address 2
*3"ก" 0
G , H 4 *+, 4 /" "/F / 5 "/
+
FOO I+V "* 1
IP Address : 203.159.231.35
Subnet mask : 255.255.255.192
Gateway : 203.159.231.1
Name Server : 203.159.231.35, 203.159.231.36 < DNS O g / ก" *+,01. " /
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5. Linux CentOS 6.0 ( ) November 4, 2011
ก" กV V ก" Linux Server
L<;C E@ ก;MDก Linux
0 ก" Linux 01. " "2 /*+2G
, O -.2 *3" 5FกP /ก" " "j 01. " W .
5F"/V 4*" 4/ก I
. G "4i W . +
1. ก Linux LFกก Windows
ก" Fกh +0 r" ก 5 M, ก. 2 *3"ก" ก" V/กก 54" Linux ก
Windows P / Windows W .*+,W 5Fก (C:) VF Linux W4.*+,W 3"5 W *+,*3"
ก" F+ GกH . V /" . / I" 1, Linux Native 3"5 W4. กk O. F VF Linux Swap 3"5
4s II" 1, 0 ก V I" 1, " " j01. Fdisk V ก ก" 4 P 4 5 01.P Vก Partition
Magic V 5F ก" 4 P 4 -. " " j F ก4Z+ก" V I *+,r" กW .4"2 01. กk 4 P 4 ก+,
Hk VF 01. กk F+ GกHก+, Hk
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6. Linux CentOS 6.0 ( ) November 4, 2011
ก" V I" 1, V/กก 54" Windows ก Linux
V r" กV 50:50 (Windows = 50%, Linux = 50%)
ก" V I" 1, V/กก 54" Windows ก Linux
V r" กV 70:30 (Windows = 70%, Linux = 30%)
2. ก Linux N <C > Lก Virtualization
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7. Linux CentOS 6.0 ( ) November 4, 2011
ก" 4Z+ +-. " " j F กW .4"2 ก" 40 F W ก 5F 2"ก ก"
k2กk*3"ก" P Vก Virtualization "* 1 VMWare, VirtualBox , Xen 5 Microsoft Virtual PC p"/5F
k2VF.4กk*3"ก" Windows Server 5 Linux Server -" *" P Vก Virtualization +ก 5 M, ก"
4Z+ + 2 *3"ก" 5, I *+, 4 5 M, O r" ก " P /W W *3"F"/ 4 P 4 /F+ GกH กF"4
5"ก ก" p"/0 P Vก Virtualization I 2 W -Fก * ก" *+,01. " / ก"
" V 44Z+ + 5 " 3"5 5. LAB 0 j" ก" gMกh" j" tuก 5Fก I4 ก +/ กgMกh"
5 -. 02*,4W *+, . ก" * 01. " F+ GกH
ก" Linux -" *" P Vก Virtualization 0 Windows
ก" Windows -" *" P Vก Virtualization 0 Linux
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8. Linux CentOS 6.0 ( ) November 4, 2011
4 /" P Vก VirtualBOX
4 /" P Vก VMWare
Note.
" " j " "/F +/ ก" VF 01. " P Vก VMWare VF VirtualBox W .*+, 4k WH
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9. Linux CentOS 6.0 ( ) November 4, 2011
www.arnut.com
3. ก @D<OกP=EGB IH <
ก" 4Z+ + ก" F+ GกH I+/ +/4 W + , O." " ก+,/4O. 5 " 3 "5
01. " 2 0 ก" " " jV I *+,r" กW . 2 Fกh
3.1 ก L Q = Aก=E R< 2 G = HB<
3.1.1 I" 1, V กV Linux Swap (Swap) P /V 2 *"O RAM *+,01. " /
4 /" 1 ก + + RAM / 512 MB กkก3"5 512 x 2 = 1024 MB
3.1.2 I" 1, *+, V Linux Native (Ext3) 3"5 กk O. FP /01I *+, ก*+,
5F /
ก" V r" ก 2 I" 1,
3.2 ก L Q = Aก=> FL G = HB<L LFก A
ก" V 4Z+ +-. . +ก" 2 I *+,r" ก01. " " 4" . ก" "* V I *+,
5. /home W4. 3"5 กk 4k WH -.01. " /Fก .", 5. /usr 3"5 01. VIkก ก2 " i
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10. Linux CentOS 6.0 ( ) November 4, 2011
5. /var 3"5 กk Fk กWF, 5. /tmp 3"5 กk WF1,4 "4, 5. /cache 3"5 กk
*Mก 5 Gก" " i O P Vก
I k กH+, H 4 , 5. / 3"5 s*I" 1, , 5. swap 3"5 *3" 4s II" 1,
.
ก" V r" กP /I" 1, V V/ก
ก IH Nero EKDF<LN< ; CDBE < Image File (*.iso)
R
1. X P Vก Nero I, O+/ V- CD
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11. Linux CentOS 6.0 ( ) November 4, 2011
X P Vก Nero
2. Fก F ก*+, Disc Image or Saved Project
F ก Disc Image or Saved Project
3. Fก F ก p*WF*+, File of type Image Files (*.mrg, *.iso, *.cue)
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12. Linux CentOS 6.0 ( ) November 4, 2011
Fก p*WF Image Files
4. Fก F ก Image File *+, . ก" 0 *+, + F ก CentOS-6.0-i386-bin-DVD.iso k2VF.4 Fก G€
Open
F ก Image File
5. Fก G€ Next I, *3"ก" O+/ V- H+ +
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12

13. Linux CentOS 6.0 ( ) November 4, 2011
Fก G€ Next I, *3"ก" O+/ V- H+ +
6. Fก G€ Close , G ก" O+/ V-
K< <ก CentOS Linux
1. ก , 05.*3"ก" "4 P5F 4 F+ GกH 4 1, F" G W .*+, 4k WH www.centos.org VF.4*3"ก" O+/ V- 4
CentOS Linux
2. *3"ก" " BIOS O , H 4 05. s 2"ก CD-ROM 5 DVD-ROM VF.4*3"ก" s , 05
3. 0 V- CD/DVD 4
4. F ก*+, Install or upgrade an existing system
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13

14. Linux CentOS 6.0 ( ) November 4, 2011
F ก Install or upgrade an existing system
5. Fก F ก*+, Skip
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15. Linux CentOS 6.0 ( ) November 4, 2011
6. V O. 4" . ก" 05. Fก F ก*+, G€ NEXT>
7. Fก F กp"h" English (English) k2VF.4 Fก F ก G€ Next
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15

16. Linux CentOS 6.0 ( ) November 4, 2011
8. Fก F ก1 ƒ I I U.S.English k2VF.4 Fก F ก*+, G€ Next
9. F ก1 O Hard Disk *+,01. " / 0 *+, +05. Fก F ก Basic Storage Devices k2VF.4 Fก G€ Next
ก + HDD V SANs 05. Fก F ก*+, Specialized Storage Devices
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17. Linux CentOS 6.0 ( ) November 4, 2011
10. Fก F ก ก*+, . ก" F+ GกH k2VF.4 Fก*+, G€ Next
11. ก3"5 "*" O"/
Hostname: ก3"5 1, , 0 *+, ก3"5
+ server01.cmslearning.co.th
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18. Linux CentOS 6.0 ( ) November 4, 2011
12. Fก*+, Configure Network I, ก3"5 "/F +/ W I+V
13. Fก F ก*+, System eth0 VF.4 Fก*+, G€ Edit I, ก3"5 "/F /
+ IP Address O LAN Card 0 Vก
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19. Linux CentOS 6.0 ( ) November 4, 2011
14. ก3"5 "/F +/ LAN Card 0 V ก (eth0) Fก*+,V*k IPv4 Settings k2VF.4ก G€ Apply…
*+, Method F ก Manual
Fก G€ Add VF.4ก3"5 "/F +/ W I+
Address: 192.168.3.5 5 "/ FOI+V
Netmask: 24 (24 bit = 255.255.255.0) 5 "/ FOH k "ก
Gateway: 192.168.3.1 ก3"5 5 "/ FOO " *+, ก * k 1 192.168.3.1
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20. Linux CentOS 6.0 ( ) November 4, 2011
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21. Linux CentOS 6.0 ( ) November 4, 2011
15. ก3"5 "/F / W I+V
+ 0 *+, 2 (j." +)
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22. Linux CentOS 6.0 ( ) November 4, 2011
16. 5F 2"ก3"5 "/F +/ W I+V k2VF.405. Fก*+, G€ Close VF Fก G€ Next
17. Fก F กm" 4F" Bangkok k2VF.4 Fก*+, G€ Next
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23. Linux CentOS 6.0 ( ) November 4, 2011
18. ก3"5 5 -" -. VF (root) k2VF.4 Fก*+, G€ Next
19. Fก F กI *+, ก*+, . ก" k2VF.4 Fก*+, G€ Next
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23

24. Linux CentOS 6.0 ( ) November 4, 2011
20. Fก F ก 1, *+, . ก" k2VF.4 Fก*+, G€ Next
Fก F ก*+, [ /] Basic Server
[ / ] Customize now
1, 3" Z "/
Desktop F ก V X Windows
Minimal Desktop F ก V X Windows V 23"ก
Minimal F ก V ก
Basic Server F ก V H 4
Database Server ก + ก" *3" " ." H 4
Web Server ก + . ก" *3" 4k H 4
Virtual Host ก + . ก" *3"Pr 5F"/P
Software Development Application ก + . 0 ก" IJ "V IF 1,
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25. Linux CentOS 6.0 ( ) November 4, 2011
21. Fก F ก 1, " i *+, . ก" 01. " k2VF.4 Fก*+, G€ Next
Base System Servers
Web Services Databases
System Management Virtualization
Desktops Applications
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26. Linux CentOS 6.0 ( ) November 4, 2011
Developments Resilient Storage
High Availability Load Balancer
Optional Languages
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27. Linux CentOS 6.0 ( ) November 4, 2011
22. , *3"ก" F+ GกH (1."5 k4OM /ก 23" 4 VIkก.ก2*+, F ก)
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28. Linux CentOS 6.0 ( ) November 4, 2011
23. Fก G€ Reboot
ก Login EK
1. V O *3"ก" s O."
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29. Linux CentOS 6.0 ( ) November 4, 2011
2. *3"ก" Fk ก O." P /01.1, V " 4" root VF ƒ 5 -" *+,01.
3. V 5 ." " 5F 2"กFk ก 3" k2
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30. Linux CentOS 6.0 ( ) November 4, 2011
ก" Logout ก2"ก
1. ก +*+, . ก" ก2"ก " " j01. 3" , logout 5 ก G€ Ctrl + D
Fk ก " ก2"ก
ก Shutdown
0 ก + . ก" X 5 *3"ก" + s"* " " j , P /01. " ,
3 +
# shutdown -r now (*3"ก" Restart )
# shutdown -h now (*3"ก" Shutdown )
# restart (*3"ก" Restart )
# halt (*3"ก" Shutdown )
# poweroff (*3"ก" X )
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31. Linux CentOS 6.0 ( ) November 4, 2011
5 ." " X Windows O CentOS 6
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32. Linux CentOS 6.0 ( ) November 4, 2011
Write by A.ARrnut Ruttanatirakul (@arnutr)
http://www.arnut.com
November 04, 2011
CMS Learning Technology Center Co.,Ltd.
Z<F=[ก
<E<] E; = L@ PDE DF;^ D
A _ Tel. 02-5120352, 088-5791324
e-Mail. info@cmslearning.co.th
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